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Preparation of carbon nano tube/acrylic carbon fiber composite carbon fiber paper and use

A technology of acrylonitrile-based carbon fiber and composite carbon fiber, which is applied in the directions of synthetic cellulose/non-cellulose material pulp/paper, fiber raw material treatment, chemical/biochemical treatment paper, etc. Easy to be damaged and other problems, to achieve the effect of improving conductivity and flexibility, good conductivity, and wide application

Inactive Publication Date: 2007-06-27
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, carbon fiber paper is an important part of the gas diffusion layer. As far as carbon fiber paper is concerned, my country's research level is far behind that of foreign countries. Equipment, material resistivity, pore size distribution, strength, etc. cannot meet the actual use needs of PEMFC
[0004] In view of the fact that the existing carbon fiber paper at home and abroad cannot fully meet the requirements of electrical conductivity, thermal conductivity, hydrophobicity and stability, especially the carbon fiber paper is brittle and lacks flexibility, and is easily damaged in the process of preparing electrodes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The acrylonitrile-based carbon fiber is cut, and its length distribution is 2mm20%, 4mm20%, 6mm20%, 8mm20%, 10mm20%, and the carbon fiber is 98% of the composite mass fraction;

[0037] The multi-walled carbon nanotubes are 2% of the mass fraction of the composite, and the composite is impregnated with an activator NaOH solution for 1 hour, and then washed with distilled water until neutral;

[0038] Disperse the carbon fibers and carbon nanotubes in the aqueous solution with a dispersant polyacrylamide solution, the amount of polyacrylamide is 1% of the mass fraction of the composite, and at the same time add the binder polyvinyl alcohol, the mass fraction of which is 5% of the composite;

[0039] Carbon fiber paper can be produced by using the principle of wet papermaking;

[0040] Dry the carbon fiber paper in a vacuum oven, and then treat it with a 15% polytetrafluoroethylene solution (PTFE): carbonize the obtained carbon fiber paper to obtain the high-performance c...

Embodiment 2

[0044] The acrylonitrile-based carbon fiber is cut, and its length distribution is 1mm20%, 3mm20%, 5mm20%, 7mm20%, 9mm20%, and the carbon fiber is 99% of the composite mass fraction;

[0045] The multi-walled carbon nanotubes are 1% of the mass fraction of the composite, and at the same time, the activator H 3 PO 4 After impregnating the complex with the solution for 3 hours, wash with distilled water until neutral;

[0046] Disperse the carbon fibers and carbon nanotubes in the aqueous solution with a dispersant polyethylene oxide solution, the amount of polyethylene oxide is 2% of the composite mass fraction, and at the same time add the binder water-soluble phenolic resin, its mass fraction is 1% of the composite ;

[0047] Carbon fiber paper can be produced by using the principle of wet papermaking;

[0048] The carbon fiber paper is dried in a vacuum oven, and then treated with a 15% polytetrafluoroethylene solution (PTFE): the obtained carbon fiber paper is subjected ...

Embodiment 3

[0052] The acrylonitrile-based carbon fiber is cut, and its length distribution is 2mm20%, 4mm20%, 6mm20%, 8mm20%, 10mm20%, and the carbon fiber is 90% of the mass fraction of the composite;

[0053] The multi-walled carbon nanotubes are 5% of the mass fraction of the composite, and the activator HNO 3 The solution impregnated its complex for 2 hours, and then washed with distilled water until neutral;

[0054] Disperse the carbon fibers and carbon nanotubes in the aqueous solution with a dispersant glycerol solution, the amount of glycerin is 0.5% of the mass fraction of the composite, and at the same time, add a binder modified starch, the mass fraction of which is 15% of the composite;

[0055] Carbon fiber paper can be produced by using the principle of wet papermaking;

[0056] Dry the carbon fiber paper in a vacuum oven, and then treat it with a 15% polytetrafluoroethylene solution (PTFE): carbonize the obtained carbon fiber paper to obtain the high-performance carbon f...

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Abstract

A process for making the composite carbon nanotube-acrylonitrile based carbon fiber paper includes such steps as immersing the acrylonitrile based carbon fibers and carbon nanotubes in the solution of activating agent for 1-3 hr, water washing until they become neutral, proportioning, pulping, adding disperser solution and adhesive, and conventionally making paper by wet method. The resultant paper can be used as antistatic packing material, planar heating material, novel energy source material, electrochemical material, electromagnetic shielding material, high-fidelity sounding material, etc.

Description

technical field [0001] The invention relates to the preparation and use of a novel functional carbon fiber paper with better conductivity, porosity and hydrophobicity, in particular to the preparation and use of a carbon nanotube / acrylonitrile-based carbon fiber composite carbon fiber paper. Background technique [0002] In the 20th century, especially in the 1970s, due to the successful application of fuel cells in spaceflight, the emergence of a global energy crisis, and the urgent need for environmental protection and sustainable development, people are stepping up their search for clean and efficient new energy sources. The fuel cell system is a new generation of clean energy power system with epoch-making significance, and was rated as one of the "Top Ten Technologies" that will change human life in the 21st century by the American "Time" magazine. The international energy community predicts that fuel cells will become the fourth-generation power generation device after...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H13/50D21D1/00D21H25/02D21H15/02
Inventor 周兆云王华平王朝生张玉梅张传雄王强华
Owner DONGHUA UNIV
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